For Shopify listings, anytime when the set the max inventory for a product is set or I need to make that variant size live again for the Shopify site, it'll mess up the chronological order of the size/weight on the drop down size options. For example if there's small, medium, large sizes for a product and the large has sold out, when setting the max inventory to 0 for that size it'll appear on the website in this order
Large, Small, Medium

There should be a feature on Storefeeder that we can enable or disable to prevent this from occurring.